this is from the obama campaign. that new ad is the first one to use romney's comments that were caught on hidden camera where he refers to some americans as victims and government dependant. the ad will accuse him of criticizing americans who don't pay their income taxes when he hasn't, quote, come clean about his own. natalie. >> all right. peter alexander in denver, colorado. thanks so much, peter. >>> zoo officials are investigating the sudden death of a newborn panda cub in washington, d.c. the week-old cub had been a happy surprise at the national zoo. its mother had suffered five failed pregnancies in the past. officials say there were no obvious external injuries or signs of infection, but a necropsy should know more today. >>> the nfl is asking coaches to respect the referees during the lockout. bill belichick may have ignored that last night and may face a fine from the league but he doesn't expect he'll have to pay up. we'll see about that. >>> a winning streak went uninterrupted at the emmy awards as "mod